1

®

FN6395.0

ISL6610, ISL6610A

Dual Synchronous Rectified MOSFET

Drivers

The ISL6610, ISL6610A integrates two ISL6609, ISL6609A

drivers with enable function removed and is optimized to

drive two independent power channels in a synchronous-

rectified buck converter topology. These drivers, combined

with an Intersil ISL63xx or ISL65xx multiphase PWM

controller, form a complete high efficiency voltage regulator

at high switching frequency.

The IC is biased by a single low voltage supply (5V),

minimizing driver switching losses in high MOSFET gate

capacitance and high switching frequency applications.

Each driver is capable of driving a 3nF load with less than

10ns rise/fall time. Bootstrapping of the upper gate driver is

implemented via an internal low forward drop diode,

reducing implementation cost, complexity, and allowing the

use of higher performance, cost effective N-Channel

MOSFETs. Adaptive shoot-through protection is integrated

to prevent both MOSFETs from conducting simultaneously.

The ISL6610, ISL6610A features 4A typical sink current for

the lower gate driver, enhancing the lower MOSFET gate

hold-down capability during PHASE node rising edge,

preventing power loss caused by the self turn-on of the lower

MOSFET due to the high dV/dt of the switching node.

The ISL6610, ISL6610A also features an input that

recognizes a high-impedance state, working together with

Intersil multiphase PWM controllers to prevent negative

transients on the controlled output voltage when operation is

suspended. This feature eliminates the need for the schottky

diode that may be utilized in a power system to protect the

load from negative output voltage damage.

In addition, the ISL6610As bootstrap function is designed to

prevent the BOOT capacitor from overcharging, should

excessively large negative swings occur at the transitions of

the PHASE node.

Applications

• Core Voltage Supplies for Intel® and AMD®

Microprocessors

• High Frequency Low Profile High Efficiency DC/DC

Converters

• High Current Low Voltage DC/DC Converters

• Synchronous Rectification for Isolated Power Supplies

Features

• 5V Quad N-Channel MOSFET Drives for Two

Synchronous Rectified Bridges

• Pin-to-pin Compatible with ISL6614 (12V Drive)

• Adaptive Shoot-Through Protection

•0.4

Ω On-Resistance and 4A Sink Current Capability

• Supports High Switching Frequency

- Fast Output Rise and Fall

- Low Tri-State Hold-Off Time

• BOOT Capacitor Overcharge Prevention (ISL6610A)

• Power-On Reset

• QFN Package

- Compliant to JEDEC PUB95 MO-220 QFN-Quad Flat

No Leads-Product Outline

- Near Chip-Scale Package Footprint; Improves PCB

Utilization, Thinner Profile

• Pb-Free Plus Anneal Available (RoHS Compliant)

Related Literature

• Technical Brief TB389 “PCB Land Pattern Design and

Surface Mount Guidelines for QFN (MLFP) Packages”

• Technical Brief TB363 “Guidelines for Handling and

Processing Moisture Sensitive Surface Mount Devices

(SMDs)”

Ordering Information

PART

NUMBER

(Note)

PART

MARKING

TEMP.

RANGE

(°C)

PACKAGE

(Pb-Free)

PKG.

DWG. #

ISL6610CBZ

6610CBZ

0 to +70

14 Ld SOIC

M14.15

ISL6610CRZ

66 10CRZ

0 to +70

16 Ld 4x4 QFN L16.4x4

ISL6610IBZ

6610IBZ

-40 to +85 14 Ld SOIC

M14.15

ISL6610IRZ

66 10IRZ

-40 to +85 16 Ld 4x4 QFN L16.4x4

ISL6610ACBZ

6610ACBZ

0 to +70

14 Ld SOIC

M14.15

ISL6610ACRZ

66 10ACRZ

0 to +70

16 Ld 4x4 QFN L16.4x4

ISL6610AIBZ

6610AIBZ

-40 to +85 14 Ld SOIC

M14.15

ISL6610AIRZ

66 10AIRZ

-40 to +85 16 Ld 4x4 QFN L16.4x4

Add “-T” suffix for tape and reel.

NOTE: Intersil Pb-free plus anneal products employ special Pb-free

material sets; molding compounds/die attach materials and 100%

matte tin plate termination finish, which are RoHS compliant and

compatible with both SnPb and Pb-free soldering operations. Intersil

Pb-free products are MSL classified at Pb-free peak reflow

temperatures that meet or exceed the Pb-free requirements of

IPC/JEDEC J STD-020.

Data Sheet

November 22, 2006

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774

Copyright Intersil Americas Inc. 2006. All Rights Reserved

AMD® is a registered trademark of Advanced Micro Devices, Inc.

All other trademarks mentioned are the property of their respective owners.